<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<style  type="text/css">
			body{
				padding: 100px;
			}
			#p1 img:hover{
				cursor: pointer;
				/* transform: rotate(360deg);
				 transition: all 2s ease-in-out 0s; */
				animation:dongtaitupian 5s 0s infinite ease-in normal running;
			}
			@keyframes dongtaitupian{
				0%{height: 100px;width: 100px;transform: rotate(90deg);}
				25%{height: 200px;width: 200px;transform: rotate(180deg);}
				50%{height: 300px;width: 300px;transform: rotate(270deg);}
				75%{height: 400px;width: 400px;transform: rotate(300deg);}
				100%{height: 500px;width: 500px;transform: rotate(360deg);}
			}
		</style>
	</head>
	<body>
		<div id="p1">
			<img src="image/3.jpg" height="100px" width="100px" />
		</div>
	</body>
</html>
